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Catalytic kinetic determination of ultratrace amounts of silver with spectrophotometric detection
Authors: Ali A Ensafi, S Abbasi
Publication date:1997/1/1
Journal name: Analytical letters
Volume: 30
Pages: 327-339
Publisher: Taylor & Francis Group
ABSTRACT Silver has a very strong catalytic effect on the peroxodisulphate oxidation of
Brilliant Cresyl Blue in the presence of 1.10-Phenanthroline as an activator. The reaction
was followed spectrophotometrically by measuring the rate of change in absorbance of
brilliant cresyl blue at 635 nm and 30° C. Silver can be determined in the range of 0.3–
1500.0 ng/ml by a fixed time method. The limit of detection is about 0.1 ng/ml of silver. Silver
in real samples was determined with satisfactory results.
Brilliant Cresyl Blue in the presence of 1.10-Phenanthroline as an activator. The reaction
was followed spectrophotometrically by measuring the rate of change in absorbance of
brilliant cresyl blue at 635 nm and 30° C. Silver can be determined in the range of 0.3–
1500.0 ng/ml by a fixed time method. The limit of detection is about 0.1 ng/ml of silver. Silver
in real samples was determined with satisfactory results.
Journal Papers
Month/Season:
January
Year:
1997